HASSEB AUDIO OVER ETHERNET XLR User manual

September
19, 2018
HASSEB AUDIO OVER ETHERNET XLR INSTRUCTIONS MANUAL
VERSION 1.0
hasseb Inc.
[e-mail]
www.hasseb.fi
HASSEB AUDIO OVER ETHERNET XLR
hasseb Audio over Ethernet XLR is an easy to use and portable device used to send
lossless, realtime microphone audio signal using Ethenet network. The device is
compatible with AES67 standard and can be used as a standalone device or
together with other AES67 compatible devices.
Two 3-pin XLR audio connectors are used to connect microphones to Ethernet
netowork. The device has two input channels with a high quality analog amplifier
and A/D converter to digitize the analog microphone signals. In addition, the
device has a 48 V phantom source for microphones requiring phantom power.
The device is configured using a web user interface and mDNS (multicast Domain
Name System) protocol is supported to easily find the device IP addresses from
the network. For professional grade network audio systems PTP (Precision Time
Protocol) based time synchronization is required. The device can act as IEEE1588
grand master to provide synchronization clock signal to the network.
INSTALLATION
The device can be powered through the Ethernet cable using a Power over
Ethernet capable switch of through a micro USB connector with an external 5 V
USB power supply.
DHCP (Dynamic Host Configuration Protocol) support is enabled by default, so the
device will assign an IP address automatically. All hasseb Audio over Ethernet XLR
devices and most other AES67 devices and their names and IP addresses
connected to the network can be found using any software, capable of searching
the network for mDNS supported devices. If you have normal domestic network
router, the web user interface of you router can also be used to find the IP
addresses of the connected devices.
WEB USER INTERFACE
The device can be configured for network, audio, and stream settings using any
web browser. Writing the IP address of the device to the address field of your web
browser, the configuration page will be opened. You can find the IP address of the
device from your network router or using free third party software such as Bonjour
Browser or MT Discovery.

September
19, 2018
HASSEB AUDIO OVER ETHERNET XLR INSTRUCTIONS MANUAL
VERSION 1.0
hasseb Inc.
[e-mail]
www.hasseb.fi
Figure 1: A web browser is used to configure the device.
AUDIO SETTINGS
The phantom voltage can be set on/off using the audio settings. The initial startup
volume level for the left and right channels can be set individually between -100
and 100, where a volume level of -100 mutes the microphone and 100 means full
amplification. The latency of the audio signal can be changed using the audio
settings as well. The device will reboot automatically after audio settings have
been changed.
VOLUME
The volume can be changed individually for the left and right channels. The volume
level selected using the volume settings is not recovered after reboot, but initial
volume levels of the audio settings are used. A reboot is not required after
changing the volume settings.

September
19, 2018
HASSEB AUDIO OVER ETHERNET XLR INSTRUCTIONS MANUAL
VERSION 1.0
hasseb Inc.
[e-mail]
www.hasseb.fi
NETWORK SETTINGS
The hostname, IP address, subnet mask, and default gateway can be set using the
web interface. The DHCP can also be enabled or disabled. By default the device
uses DHCP to assign the network settings. The default hostname for the device is
hasseb-AoE-XX-XX, where XX-XX are the last two octets of the device MAC address.
After configuration of new network settings, the device will reboot automatically.
STREAM SETTINGS
The network audio stream sent by hasseb Audio Over Ethernet device is named as
AES67-stream (on ‘network_hostname’), where ‘network_hostname’ is the
hostname of the device as defined in network settings (for example AES67-stream
(on hasseb-AoE-AB-CD)).
AES67 standard defines the audio stream following RTSP (Real Time Streaming
Protocol) used also for example in internet radio stations. The address of the
output stream is visible on the “RTSP stream address” field. In addition to another
AES67 compatible device, the output stream can be listened using any media
player supporting RTSP protocol, such as VLC media player.
By default, the IP address of the sent network audio stream is of a form
239.xxx.xxx.xxx, where xxx is chosen randomly. If you want to manually choose the
IP address of the network stream you can choose the “Add IP address manually
for the output stream” option and add the wanted IP address manually to the “IP
address” field.
The SDP file of the network audio stream is visible in the “SDP file” field if you need
to add it manually to another AES67 device.

September
19, 2018
HASSEB AUDIO OVER ETHERNET XLR INSTRUCTIONS MANUAL
VERSION 1.0
hasseb Inc.
[e-mail]
www.hasseb.fi
STATUS LED
There is a blue LED next to the USB connector of the device to indicate the status
of the device. The LED will blink once a second when the device is operating
properly.
RESET FACTORY DEFAULTS
If something goes wrong with the network settings and you cannot access the
device anymore through the network, you can reset the factory defaults using the
push button inside the device. To access the reset button you need to open the
enclosure.
To reset the factory default settings, press the push button and power up the
device. Keep the push button pressed for 10 seconds. This will reset the setting to
factory defaults. The default network configuration is DHCP on.
SYSTEM INTEGRATION
The devices can also be configured using standard http POST requests.
The audio settings can be changed by sending a request POST /audio_setup. The
phantom power can be switched on using a parameter phantom power=1 and
switched off using a parameter phantom_power=0. The gains are changed using
parameters left_gain=xxx and right_gain=xxx, where xxx is the gain in range -100
to 100. The latency can be changed using a paratemer latency=xx, where xx is the
latency in milliseconds between 1 and 50.
The volume of the input channels can be changes by sending a request POST
/volume_setup. The left and right volumes are changes using parameters
volume_left=xxx and volume_right=xxx, where xxx is the volume in range -100 to
100.

September
19, 2018
HASSEB AUDIO OVER ETHERNET XLR INSTRUCTIONS MANUAL
VERSION 1.0
hasseb Inc.
[e-mail]
www.hasseb.fi
Specifications
Input voltage
5 VDC (USB) / 48 V (PoE)
Input current
300 mA
Input audio voltage
50 mV
Phantom voltage
48 ± 2 V
Operating temperature
0 – 50 °C
Dimensions
38 mm x 64 mm x 80 mm
Weight
150 g